Rail drill



Nn Mnde,\ 4 Sheets-Sheen M. M. MOORE. RAIL DRILL.

Patnted Jan. 3.1,1898

llllllHh :No MP-dem 4 4 Shams-hm M. M. MOORE. RAIL DRILL Patented Jan, 11.1898.

l vijf/ffy# (No Model.) 4 Sheets-Smet 3 M. M. MOORE. RAIL DRILL No. 597,377. Fateuted Jan. 11, 1898.

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(No Model.) 4 Sheets-ShamJ M. M. MOOREt RAIL DRILL Pat'ente an l1, Y18%.

MOsEs M. MOORE, OF cnioneo, runners.

am r-'oalLL l n SEECIFIGATION forming' part of .Letters Patent No. 597,377, dated January il, E398.

Application iiled Jennery 27, 1897. Serial No.' 620,985. (lio model.)

To `cir/ZZ whom t may concern..-

-Be it known that I, Moens M. MOORE, a citi` i zenof the United States, residing at Chicago, in. the county of Cook and State of Iliinois,

have invented a new and useful Improvement "in Rail-Drills, of which the following is a specification.

My invention relates to anirnprovement in i rail-drills for use more especially on railroad- IO. ready detachment of the drill from the rail to `4`permit `the passage of a train.

tracksywhere it is desirable to provide for the Other important objects of my invention,

fin addition to that above indicated, are to provide areadily-regulable friction-feed and "to have the construction of the drill generally of so compact a nature that it may be left in its detached position between the-rails without interfering with the passage of a train.

" Generally stated my preferred construction, which is that shown in the accompanyv'ing drawings, comprises a tool-holdermount- Y ed in a suitable sliding frame connected` lthrough the medium Of a feed-screw with a rear end plate, in which is in turn journaled a shaft provided with cranks carrying Wristpins, upon which are mounted a pair of 'clamp-hooks, means for turning said shaft to set andrelease the clam p-hooks, and ratchetoperated gears for communicating motion to `the tool and to the friction-feed employed.4

. 4Q line 4 of Fig. 2- and viewed as indicated;

lntlie drawings, Figure l represents, by a partly sectional plan View, my improved raildrill in position for boring a rail, a portion of the tread of the rail being removed to expose the drill-point about-to enter the web; Fig. 2, a vertical section taken on line 2 of Fig.` l and viewed. in the direction of the arrow;

Iiig. 3, a view of the saine in side elevation;

Fig. ,4, a transverse vertical, section taken on Figs. 5 andY 6, sectional details of the ratchet- Wheels and operating-peels employed,the sections being at the lines 5 and 6, respectively, of Fig. 4; Fig. 7, a sectional View of 4a friction-feed, the section being taken on line 7 of Fig. l.; Fig. 8, va. rear View of a supplemental operating-wheel attached to the feed-nut, the section being taken online Sof Fig. 1 and viewed as indicated; and Fig. 9, a view in end eievation of the rear endpiece of the frame' with the crank in position', into Whichhare screwed the guides hereinafter de scribed.

The `moving parts of the drill device are mounted in and upon a frame comprising a rear cross-bar A and horizontally-disposed guides B B', preferably cylindrical inform and screwed into the cross-bar and secured therein by nuts a: w. Upon lthe guides B B are mounted slides C C', connected by a crossbar Drigidly secured thereto, as by means of screws y. Journaled in the cross-bar C is a tool-carrying bevei-gear E", in which is re.

niovably secured the drill bit or tool F, shown in Figzl as bearing against the exposed'web .e of a rail G.

The gear E is provided centrally with a ,socket `into which lits a stem fw of a hollowcruciform casting orv forging H, provided with lateral bearings H' H12 and with a rearwardextending hub or shank H3, rnade hollow to receive the end of a feed-screw l, which. latter is rigidly secured ,to the center of the rear cross-bar A.

The slides C C are provided with inwardlyf extending bearings o o', which, together with the bearings H' H2, serve to support shafts I J J', upon which are rigidly secured bevelgears K K', which mesh with the gear E and with an outer gea-r L, joui-nailed upon the shank H3 of -the crnciform piece H. The shafts J and J extendwithin the cruciform piece and carry removable ratchet-Wheels M M which are prevented from turning upon. thesliafts bysplines't The shafts at their inner ends fit loosely into an operating-level`- N, pivoted thereon, as clearly shown in Fig. 45.*.:

The purpose of the double ratchet is to coni-f municate a substantially continuous motionto the drill-tool as the opera ting-lever is given an oscillatory movement. Accordingiy the teeth oi the respective ratchet-wheels 'entend in 'opposite directions, and the lever carries corresponding oppositely-beveled engaging pawlsf; confined' within sockets in an enlarged portion N thereof and held in engagement with the ratchet-wheels by springs r fr".

The operating-lever is provided with a stud N2, (seel Fig. 2,) over which nts a Vsocketed handle N3. Figs. 5 and 6 show the manner in which the respective pawls engage the respective ratchet-wheels and make it ciear that when the, handle ism oved army $20,111' the rail rigid therewith and so disposed thereon as to lie close down in the plane of the horizontallydisposed frame when the grip-hooks are thrown back from the rail. Upon the wrist- .pins are pivoted links m m", having their inwardly-turned free ends provided with holes y to fit looselypver and slide on the guides B B'. The links P are in turn provided with wrist-pins Z Z', on which are pivoted clamphooks k 7e', curved, as shown, and connected by a cross-rod Z2, which is fastened to the hooks near their curved ends to permit the hooks to be folded back closely upon the drillframe. Y

For the purpose of automatic feed I provide the feed-screw, which, as stated, is rigid with the vrear cross-bar, with a steel nut P, provided with a' circumferential groove, into which fits a corresponding annularring Q upon th'enner surface of a separable frictioncollar Q, (see Fig. 7,)provided with tighteningscrews -h h' and with' perforated earshi for attachment, as by screws h3, to a sleeve R, hereinafter described. Between the nut P and the shank II" of the cruciform piece II is an annular ring r, grooved, as shown, to afford'a race for balls g', upon which the .nut bears. The sleeve R ineloses the endof the shank Il3 and the ball-bearing, and is proy vided with earsffor attachment to the friction-collar Q, and at its opposite end is enlarged to encircle the hub of the gear L, to which it is attached, as byscrewsf. Longitudinal movement of these parts upon the shank of the crueiform piece II is prevented by means of a separable circular keyf2, set into the shank and confine-'l within the'enlarged portion of the collar R. p

A supplemental operating-wheel S,supplied with radial openings S (see Fig. 1) for the insert-ion of an operating-handle, is secured to the nut by screws e and serves to withdraw the drill-tool after it has been fed-forward and also to feed it in ease the automatic feed is dispensed with or it is desirable to supplement it thus. j l

The slides C C- are provided with downwardly-depending lugs c c', (see Fig/1,) to which is attached anr apron .or cross-plate B2, which extends beneath the gear mechanism and with the lugs on the rear cross-bar forms afbase Vfrlr the drill device.

d The fi'feratio'n is as follows: 'lhe drill is `placed in position at the desired point along the rail to be drilled and the clamp-hooks are dropped over to loosely embrace the rail, when by means of the handle n the cranks p p2 areV turned to draw upon the links m nl",

and through them to cause the clamp-hooks to draw against and clamp the rail against the tool-point. In this movement of the lever 'n the cranks'are turned to a dead-center with relation to the links and thus lock the clamphooks in the position of bearing firmly against the Web of the rail. Theoperating-handle X is thenworked back and forth, and through the medium of the'pawls and ratchet-wheels, disposed as described above, the drill-tool is given a practically continuous right-handed motlon. Likewise the gear L is given a practically continuous rotation and with it the,

sleeve R and the friction-collar Q. The latter, by means o'f the screw h', is caused to grip the nut with a pressure depending upon the strength of feed required, and as the nut is thereby fed forward it forces the whole gear mechanism to move forward, the movement being guided by the feed-screw and the guides B B. If it is desired to retract the drill-tool, it may be done by means of the supplemental operating-wheel S. To permit the passageof a train, itis necessary only to raisethe lever n and thus rock the shaft 1) which carries the cranks connected with the clamp-hooks, when the latter are suiiciently loosened to permit them to be raised past the tread of the rail and dropped'back by the side of the links m m', the handle \"i having been previously removed from the stud N2.A The vertical height of the drill in this last position is so small as not to interfere with the passage of a train. It will thus be seen that the -drill is especially adapted to use where the traffic is great and any delay of trains to be avoided.

The construction may be modified in matters ofdetailwithoutdeparting from the spirit of my invention. Hence I wish 'toV be understood as in no sense limiting myself by the minu te description ofthe construction shown,except as shall appear from the appended claims. For instance, it is desirable, but not necessary, to provide the intermediate links m m between the clamp-hooks and the crank-shaft p, and with slight changes in the clamp-hooks the device may be adapted to other purposes than a ,rail-drill. l

What I claim as new, and desire to secure by Letters Patent, is-

1. In a drill device, the combination with the diill-tool-operaiiug mechanism and/a horizontal] -disposed frame therefor, of a shaft journa ed in the frame, clamp-hooks eccentrically connected with said shaft bent to extend over and engage a rail, and a relatively short handle connected with-said shaft to rock the same and throw the hooks into and out of engagement with the rail, substantially as and for the purpose set forth.

2. In a drill device, the combination with a horizontally-disposed frame havinghorizontiene?? l a ,iai guide-i865, end the dri1l-tooi'opereting mechanism mounted in said frame, of n shaft journaled in the frame, links eccentrically lconnected with the shaft and movable on seid guide-rods, olam-p-hdoiis pivotelly connected with said links and bent to engage e rail, end a relatively short handle connected with seid shaft for rocking-the same to throw said hoehe into and out of engagement with the rnil, nnbstantially as and for the purpose eet forth.

3. In a drill device, the combination with the frage, thereof,of a. movable slide on the frame, n, tool-carrying ge'r jonrneled in said slide,two oppositely-turningratchet-operated bevel-gears engaging seid tool-carrying gear and-imparting a practically continuous motion thereto, and feeding,y mechanism for nioving said slide, substantially as and for thepurpose set forth.

4. In e drill device, the combination with the frame thereoL'of e. movable slide on the frame, a. tool-carrying bevel-gear journeled in saidislide, two oppositely-turning ratcheteperated bevel-gears engaging said tool-cerrying gear, en outer gear located opposite said tool-carrying gear and engaging seid oppositely-turnin g bevel-gears, a. feed-screw rigid with the frame, e nut thereon, e friction-collar uponl said nut and connected withfsaid outcrgear, and means for controlling thc pressure of said coller to regulate the feed, sub

. stantially as and for the purpose set forth.

5. In n drill device, the combination with the frame thereof provided with guides, of e slide on said guides, provided with inwardextending bearings,a tool-carrying bevel-gear journnled in the slide, a hollow cruciform piece centered in said gear and provided with lateral bearings and a rearward-extending Shank, shafts Supported byszzid bearings and thebcaringsnpon Said slidcs,bcvcl-gcars rigid with said shafts and engaging seid tool-can rying gear, oppositcly-bcvelcd mtchctwheels secured to the shafts, an opcrntingllcver on the shefts,`ra.tchctengaging pnvv'ls on said lever, end feeding mechanism for the slide, substantinlly as and for? the purpose set forth. ,In attack-drill, .tile combination with e henne;havinghopizotellyldisposed guides,

of a slide on seid guides provided with inwardly-extending bearings, e tool-carrying bevel-gear journaled in the slide, a. hollow cruoiforrn piece centered in said gear and provided with lateral bearings and rearward-extending shank, shafts supported by seid beer-A ings end the bearings upon said slides, bevelgears rigid with the shafts and engaging the tool-carrying gear, retchetwheeis provided with. oppositely-heveied teeth secured to the she-fte, an operetingdever on the shafts, ratchet-engaging pnwls on seid lever,nn outer genrjonrneled on'tlie shenkof said crnciforrn piece end engaging the gears on seid shafts, e. feed-screw rigid with the frame, e nut on seid screw, e frictiomcoller upon seid nut, connecting ineens between seid friction-coller and seid outer geel-,a :supplemental operating-wheel connected with the nut, e shaft journeled in the frame, cranks on seid shaft, links pivoted on the cranks and slideble on seid guides, clamp-hooks pivoted to said links for engaging e. rail, and means for rocking the crank-sheft to throw the clamp-hooks into and out of engaging position, substantially es and for the purpose set forth.

7. ln a. drill device the combination with the drill-tool-opereting mechanism and horizontally-disposed frame therefor, of a, shaft journnled in the frame, clamp-hooks eccentrically mounted upon said shaft and bent to engage e rail, e. rod joining seid curved ends neer their extremities, and a relatively-short liendle attached to said shaft to rock the seme throw seid hooks into and ont of engage'- ment with e rail, substantially as and for the purpose set forth.

8. In a, drill device, the combination with the frame, feed-screw in the frame, leind drilltool-roteting gear, of e. traveling not on 'the feed-screw, e. friction-coller surrounding the nut and rotated bysaid gear and an annular tongue-end-groove connection between said collar and nut, substentiallyes and for the purpose set forth. v

MOSES M. MOORE. in presence of- J. ll. LEE,

it. T. SPENCER. 

